DESCRIPTION

The _llseek() function repositions the offset of the open file
associated with the file descriptor fd to (offset_high<<32)|offset_low bytes relative to the beginning of the file, the current
position in the file, or the end of the file, depending on whether
whence is SEEK_SET, SEEK_CUR, or SEEK_END, respectively. It returns
the resulting file position in the argument result.

RETURNVALUE

Upon successful completion, _llseek() returns 0. Otherwise, a value of
-1 is returned and errno is set to indicate the error.

ERRORS

EBADFfd is not an open file descriptor.
EFAULT Problem with copying results to user space.
EINVALwhence is invalid.

CONFORMINGTO

This function is Linux-specific, and should not be used in programs
intended to be portable.